I recommend following the guide and confirming that your have your address formatted correctly (such as including the www).
If you have any further questions, feel free to post them below.
Thanks for your help.
and need to change the 3 lines to:
Is that correct?
But I think about this, perhaps is too late, because Google have in cache for 6 months some links with my cart without www and my site with www.
Please give me advice how to keep the Google links with some 301?